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<p>The present study reports the occurrence of <i>Norileca borealis</i> Javed &amp; Yasmeen, 1999, a branchial-attaching parasitic isopod, for the first time from the coastal waters of India (Konkan and Malabar coast) and for the second time apart from its original description on the basis of forty-seven specimens. The species was recently recognized as a new species and reported from the Northern Arabian Sea from the Karachi coast of Pakistan; thus, this report extends its distributional range to southwest India as well. The species was previously described on the basis of only four individuals without a proper mention of the exact type locality; thus, the present study provides more detailed information on the species. <i>Norileca borealis</i> can be recognized by its distinctively twisted body, a somewhat triangular-shaped cephalon, antennules composed of 8 segments, and antennae with 9 segments. It also features a maxilliped with three strong setae on its 3<sup>rd</sup> article, and a triangular pleotelson.</p>

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First Report of Norileca borealis Javed & Yasmeen, 1999 of the Family Cymothoidae from the Coastal Waters of Southwestern India

  • 期刊论文

  • 发表日期：

    2026年4月9日

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  • Sanmitra Roy,
  • Sandeep Kumar Mohapatra,
  • Ranjit Satrusallya,
  • Jaya Kishor Seth,
  • Srinivasan Balakrishnan,
  • Chelladurai Raghunathan

摘要

The present study reports the occurrence of Norileca borealis Javed & Yasmeen, 1999, a branchial-attaching parasitic isopod, for the first time from the coastal waters of India (Konkan and Malabar coast) and for the second time apart from its original description on the basis of forty-seven specimens. The species was recently recognized as a new species and reported from the Northern Arabian Sea from the Karachi coast of Pakistan; thus, this report extends its distributional range to southwest India as well. The species was previously described on the basis of only four individuals without a proper mention of the exact type locality; thus, the present study provides more detailed information on the species. Norileca borealis can be recognized by its distinctively twisted body, a somewhat triangular-shaped cephalon, antennules composed of 8 segments, and antennae with 9 segments. It also features a maxilliped with three strong setae on its 3rd article, and a triangular pleotelson.